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  • Automotive Industry
  • Powertrain
  • Chassis
  • Body and Structure
  • Control and Electronics
  • Dynamics and Performance
  • Service
    • About
    • Contact

Triflux Cylinder Head and Turbocharging

1/6/2016

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"TRIFLUX" double reverse flow cylinder head
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ECV1 Engine
In Figure 4 there is shown a preferred embodiment of the invention, in which the induction manifold 41 is a common manifold and is connected, as in the preceding embodiment, to both the compressors of the two turbo-compressor units, whilst the induction duct 42 is a common duct for the first part of its length where the injectors 43 and butterfly valves 44 are positioned, and then splits into two ducts 45 and 46 connected to the induction valves 47 and 48.
In Figure 2, the reference numeral 30 indicates two exhaust ducts which open into two manifolds 31, connected, as in Figure 1, to two turbo-compressor units.
  • Turbocharging System
  • ECV2 Engine
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ECV1 Engine - Two air-air intercoolers (one for each turbocharger)
The four compressors are driven as in the arrangement of Figure 1 by two turbines 61 and 62 for each bank, driven by exhaust gas conveyed by means of ducts 63 and 64 and manifolds 65 and 66.
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Two intercoolers air to water
günstigere thermische Belastungen, hoher Füllungsgrad der Zylinder und hohe Leistung bei effizientem Drehmomentverlauf
An arrangement of this type permits a rational installation of only one turbo-compressor unit, whilst the current tendency, above all in racing engines, is to utilise at least two turbo-compressor units for the purpose of reducing the "response time" and the loss of power at low engine speeds to the minimum.
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MDB TDI Cylinder Head - Valve Layout

7/5/2015

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EU6 TDI biturbo
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2.0-l TDI biturbo
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Small block piston weights

9/24/2014

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LS7 - 482 grams (Gen 4 LS7 engine)
482-gram flat top aluminum piston

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458 Speciale V8 - Optimised combustion chamber fluid-dynamics

5/15/2014

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The high-revving 4.5-liter V8 redesigned pistons increase the Speciale's compression ratio from 12.5:1 to 14.0:1. The efficiency increase it brings is the main reason the engine produces 596 hp, 34 more than the regular 458 Italia's, at the same 9000 rpm.
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The shape has been optimized to improve the flame velocity
The pressure in the combustion chamber is increased (+10bar at wide open throttle)
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Compression ratio - Flat-12 racing engines

4/16/2014

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917-Motor
10.5:1
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Tipo 015
11.5:1 (1980 312 T5)
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Subaru/Motori Moderni 1235
11.5:1
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M 291
12.0:1
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Cylinder bore coatings - APS and HVOF processes

3/18/2014

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  • rotating plasma spray devices
  • thermal spray coating process
APS (Atmospheric Plasma Spraying)
HVOF (High Velocity Oxy-Fuel) 
During the APS process temperatures up to 20.000 "C are obtained, therefor this system is mainly used for refractory materials. Precedent to the coating process a grit blasting and degreasing of the substrate surface is performed.
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HVOF equipment for the inside coating of light metal cylinder bores
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Angle-split connecting rods

1/7/2014

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Connecting rod and Piston of the R18 V6TDI
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Subaru FB engine connecting rod
The angled cap is used to fit on small bore applications, or for cam clearance.
Angle-split connecting rods have the disadvantage that the upper part of the blind hole thread is located directly in the path of greatest stress.
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